package com.xydtech.framework.web.exception;

import javax.servlet.http.HttpServletRequest;

import com.xydtech.common.exception.ApiException;
import com.xydtech.common.model.ResponseModel;
import org.apache.shiro.authz.AuthorizationException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.dao.DataIntegrityViolationException;
import org.springframework.validation.BindException;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.ModelAndView;
import com.xydtech.common.core.domain.AjaxResult;
import com.xydtech.common.exception.DemoModeException;
import com.xydtech.common.exception.ServiceException;
import com.xydtech.common.utils.ServletUtils;
import com.xydtech.common.utils.StringUtils;
import com.xydtech.common.utils.security.PermissionUtils;

import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.TreeSet;
import java.util.stream.Collectors;

/**
 * 全局异常处理器
 * 
 * @author ruoyi
 */
@RestControllerAdvice
public class GlobalExceptionHandler
{
    private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class);

    /**
     * 权限校验异常（ajax请求返回json，redirect请求跳转页面）
     */
    @ExceptionHandler(AuthorizationException.class)
    public Object handleAuthorizationException(AuthorizationException e, HttpServletRequest request) {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',权限校验失败'{}'", requestURI, e.getMessage());
        if (ServletUtils.isAjaxRequest(request) || StringUtils.isNotEmpty(request.getHeader("token"))){
            return AjaxResult.error(PermissionUtils.getMsg(e.getMessage()));
        } else {
            return new ModelAndView("error/unauth");
        }
    }

    /**
     * 请求方式不支持
     */
    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
    public AjaxResult handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException e,
                                                          HttpServletRequest request) {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',不支持'{}'请求", requestURI, e.getMethod());
        return AjaxResult.error(e.getMessage());
    }

    /**
     * 拦截未知的运行时异常
     */
    @ExceptionHandler(RuntimeException.class)
    public AjaxResult handleRuntimeException(RuntimeException e, HttpServletRequest request) {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',发生未知异常.", requestURI, e);
        return AjaxResult.error(e.getMessage());
    }

    /**
     * 系统异常
     */
    @ExceptionHandler(Exception.class)
    public AjaxResult handleException(Exception e, HttpServletRequest request) {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',发生系统异常.", requestURI, e);
        return AjaxResult.error(e.getMessage());
    }

    /**
     * 业务异常
     */
    @ExceptionHandler(ServiceException.class)
    public Object handleServiceException(ServiceException e, HttpServletRequest request) {
        log.error(e.getMessage(), e);
        if (ServletUtils.isAjaxRequest(request)) {
            return AjaxResult.error(e.getMessage());
        } else {
            return new ModelAndView("error/service", "errorMessage", e.getMessage());
        }
    }

    /**
     * 自定义验证异常
     */
    @ExceptionHandler(BindException.class)
    public AjaxResult handleBindException(BindException e) {
        log.error(e.getMessage(), e);
        String message = e.getAllErrors().get(0).getDefaultMessage();
        return AjaxResult.error(message);
    }

    /**
     * 演示模式异常
     */
    @ExceptionHandler(DemoModeException.class)
    public AjaxResult handleDemoModeException(DemoModeException e) {
        return AjaxResult.error("演示模式，不允许操作");
    }

    /**
     *小程序接口异常处理
     * @Title: apiException
     * @param e
     * @return com.xydtech.common.model.ResponseModel
     * @exception
     * @author JHON
     * @Date 2021/11/15 16:14
     **/
    @ExceptionHandler(ApiException.class)
    public ResponseModel apiException(ApiException e) {
        return ResponseModel.error(e);
    }


    // 处理微信Api部分参数验证返回
    @ExceptionHandler(MethodArgumentNotValidException.class)
    public ResponseModel methodArgumentNotValidException(MethodArgumentNotValidException e) {
        BindingResult bindingResult = e.getBindingResult();
        StringBuilder msg = new StringBuilder();
        // 若果一个属性有多个验证结果错误信息中会有多个 相同的field信息，优化显示用,先按照filed去重复在处理返回显示信息
        bindingResult.getFieldErrors().stream().collect(
                Collectors.collectingAndThen(
                        Collectors.toCollection(() -> new TreeSet<>(Comparator.comparing(FieldError::getField))), ArrayList::new)
        ).forEach(item -> msg.append(item.getField()).append(item.getDefaultMessage()).append(";").append(System.lineSeparator()));
        return ResponseModel.error(msg.toString());
    }

    /**
     * 处理数据库异常
     */
    @ExceptionHandler(SQLException.class)
    public AjaxResult handleSQLException(BindException e) {
        log.error(e.getMessage(), e);
        String message = e.getAllErrors().get(0).getDefaultMessage();
        return AjaxResult.error(message);
    }
    /**
     * 处理数据违反了完整性异常
     */
    @ExceptionHandler(DataIntegrityViolationException.class)
    public AjaxResult handleDataIntegrityViolationException(BindException e) {
        log.error(e.getMessage(), e);
        String message = e.getAllErrors().get(0).getDefaultMessage();
        return AjaxResult.error(message);
    }
}
